.knowledge-page { min-width: 320px; }
.knowledge-main { max-width: 1040px; margin: 0 auto; padding: 28px 28px 80px; }
.knowledge-breadcrumb { display: flex; flex-wrap: wrap; gap: 9px; margin: 4px 0 30px; color: var(--info-muted); font-size: .88rem; }
.knowledge-breadcrumb a { color: var(--info-muted); text-decoration: none; }
.knowledge-breadcrumb a + a::before { content: '›'; margin-right: 9px; color: var(--info-muted); }
.knowledge-breadcrumb a:hover { color: var(--info-primary); }
.knowledge-main h1 { font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.2; margin: 0 0 18px; letter-spacing: -.025em; }
.knowledge-main h2 { font-size: clamp(1.35rem, 2vw, 1.7rem); line-height: 1.35; margin: 0 0 18px; }
.knowledge-main h3 { font-size: 1.08rem; margin: 0 0 12px; }
.knowledge-main p { margin: 0 0 16px; }
.knowledge-main a { color: var(--info-primary-dark); }
.knowledge-lead { max-width: 760px; font-size: 1.12rem; color: var(--info-muted); line-height: 1.85; }
.knowledge-eyebrow { margin-bottom: 14px !important; color: var(--info-primary); font-weight: 700; letter-spacing: .04em; }
.knowledge-hero { display: flex; align-items: center; justify-content: space-between; gap: 36px; padding: 42px; background: var(--info-surface); border: 1px solid var(--info-border); border-radius: 24px; box-shadow: var(--info-shadow); }
.knowledge-hero > div { min-width: 0; }
.knowledge-card-image { flex: 0 0 auto; width: min(28vw, 220px); height: auto; border-radius: 12px; box-shadow: 0 14px 36px rgba(25, 35, 70, .18); }
.knowledge-section { margin-top: 42px; padding: 32px 36px; background: var(--info-surface); border: 1px solid var(--info-border); border-radius: 20px; }
.knowledge-section p:last-child { margin-bottom: 0; }
.knowledge-action { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; margin: 10px 0; padding: 10px 20px; border-radius: 11px; color: #fff !important; background: var(--info-button); text-decoration: none; font-weight: 700; }
.knowledge-action:hover { background: var(--info-button-end); }
.knowledge-meaning-grid, .knowledge-scenarios { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.knowledge-meaning-grid > div, .knowledge-scenarios > section { padding: 20px 22px; background: var(--info-surface-soft); border-radius: 14px; }
.knowledge-scenarios p { margin-bottom: 10px; }
.knowledge-card-grid, .knowledge-spread-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }
.knowledge-card-grid a { display: flex; align-items: center; gap: 16px; min-height: 128px; padding: 14px; color: var(--info-text); border: 1px solid var(--info-border); border-radius: 14px; text-decoration: none; }
.knowledge-card-grid a:hover, .knowledge-spread-grid a:hover { border-color: var(--info-primary); background: var(--info-surface-soft); }
.knowledge-card-grid img { width: 56px; height: 98px; object-fit: contain; }
.knowledge-card-grid small, .knowledge-spread-grid small { display: block; color: var(--info-muted); line-height: 1.5; font-weight: 400; }
.knowledge-spread-grid { margin-top: 28px; }
.knowledge-spread-grid a { display: block; min-height: 96px; padding: 20px; color: var(--info-text); border: 1px solid var(--info-border); background: var(--info-surface); border-radius: 14px; text-decoration: none; }
.knowledge-spread-grid strong { display: block; margin-bottom: 8px; }
.knowledge-position-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 30px; padding-left: 24px; }
.knowledge-position-list li { padding-left: 4px; }
.knowledge-spread-preview-figure { margin: 4px 0 28px; padding: 24px; border-radius: 16px; background: var(--info-surface-soft); text-align: center; }
.knowledge-spread-preview { display: grid; grid-template-columns: repeat(var(--spread-preview-cols), 38px); grid-auto-rows: 64px; justify-content: center; gap: 10px; }
.knowledge-spread-preview-cell { display: block; width: 38px; height: 64px; visibility: hidden; }
.knowledge-spread-preview-cell.is-active { display: grid; place-items: center; visibility: visible; border: 1px solid rgba(68, 78, 197, .34); border-radius: 6px; color: var(--info-primary-dark); background: linear-gradient(145deg, rgba(255, 255, 255, .94), rgba(229, 231, 255, .82)); box-shadow: 0 7px 16px rgba(48, 61, 125, .1); font-family: Georgia, "Times New Roman", serif; font-size: 1rem; font-weight: 700; }
.knowledge-spread-preview-figure figcaption { margin-top: 14px; color: var(--info-muted); font-size: .84rem; }
.knowledge-neighbors { display: flex; justify-content: space-between; gap: 16px; margin-top: 30px; }
.knowledge-neighbors a { padding: 10px 0; text-decoration: none; font-weight: 600; }
.knowledge-note { margin-top: 34px !important; color: var(--info-muted); font-size: .9rem; }
.knowledge-note a { margin-right: 12px; }
@media (max-width: 700px) {
  .knowledge-main { padding: 22px 16px 58px; }
  .knowledge-hero { padding: 28px 22px; align-items: flex-start; }
  .knowledge-card-image { width: 110px; }
  .knowledge-section { margin-top: 22px; padding: 24px 20px; }
  .knowledge-meaning-grid, .knowledge-scenarios, .knowledge-card-grid, .knowledge-spread-grid, .knowledge-position-list { grid-template-columns: 1fr; }
}
@media (max-width: 440px) {
  .knowledge-hero { flex-direction: column-reverse; }
  .knowledge-card-image { width: 132px; }
  .knowledge-spread-preview-figure { margin-inline: -4px; padding: 18px 8px; overflow-x: auto; }
  .knowledge-spread-preview { grid-template-columns: repeat(var(--spread-preview-cols), 30px); grid-auto-rows: 51px; gap: 7px; min-width: max-content; }
  .knowledge-spread-preview-cell { width: 30px; height: 51px; }
}

:root[data-theme="dark"] .knowledge-spread-preview-cell.is-active {
  border-color: var(--info-border);
  color: #fff;
  background: var(--info-surface);
  box-shadow: 0 7px 16px rgba(0, 0, 0, .2);
}

/* Keep the static card underneath while the one-shot animation loads. */
.knowledge-card-media { position: relative; display: block; flex: 0 0 auto; width: min(28vw, 220px); padding: 0; border: 0; border-radius: 12px; background: transparent; cursor: pointer; }
.knowledge-card-media .knowledge-card-image { display: block; width: 100%; }
.knowledge-card-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; border-radius: inherit; opacity: 0; pointer-events: none; }
.knowledge-card-media.is-playing .knowledge-card-video { opacity: 1; }
@media (max-width: 700px) { .knowledge-card-media { width: 110px; } }
@media (max-width: 440px) { .knowledge-card-media { width: 132px; } }
@media print { .knowledge-card-video { display: none; } }